Home > Duplex Steel > Duplex Steel S31803 Fasteners
At Nasir Nickel Alloys in Manama, Bahrain, Duplex Steel S31803 Fasteners are engineered to deliver exceptional strength, corrosion resistance, and long-term reliability in demanding environments. Made from a duplex stainless steel grade combining both austenitic and ferritic phases, these fasteners provide superior resistance to chloride-induced corrosion, pitting, and stress corrosion cracking. Their high mechanical strength allows them to perform reliably under heavy loads and fluctuating temperatures. Duplex Steel S31803 Fasteners are crafted to support critical industrial applications where durability, structural stability, and corrosion resistance must consistently meet rigorous operating requirements.
Duplex Steel S31803 Fasteners are composed of chromium, nickel, molybdenum, and nitrogen, providing an excellent balance of strength and corrosion resistance. The duplex microstructure enhances tensile and yield strength, offering nearly twice the strength of conventional stainless steels. Molybdenum and chromium improve resistance to pitting and crevice corrosion, especially in chloride-rich environments. These fasteners maintain good toughness, strong fatigue resistance, and stability across variable temperatures. Their resistance to stress corrosion cracking makes them suitable for challenging industrial conditions where both high strength and corrosion resistance are essential.
| Specifications | : | ASTM A182 / ASME SA182 |
| Size | : | 1/8″ NB TO 24″ NB |
| Standards | : | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure | : | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Standard | : | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Grades | : | S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F6 |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| Duplex Steel S31803 | 0.030 max | 1.20 max | 0.80 max | 0.035 max | 0.020 max | 24.00 – 26.00 | 3.00 – 5.00 | 6.00 – 8.00 | 0.24 – 0.32 | 58.095 min |
At Nasir Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Fasteners in Manama, Bahrain, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Bahrain, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
Duplex Steel S31803 Fasteners are widely used in industries that demand strong, corrosion-resistant components capable of withstanding harsh conditions. In the oil and gas sector, they are ideal for offshore platforms, subsea equipment, and flowlines exposed to seawater and aggressive chemicals. Chemical processing industries use them in heat exchangers, reactors, and high-pressure equipment. They also serve desalination plants, marine engineering systems, and wastewater treatment facilities where chloride exposure is common. Additionally, these fasteners are utilized in pulp and paper mills, structural components, and power generation units, offering reliable performance and long-term durability in demanding applications.
